Saxifraga rivularis, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 377

91. S. rivularis L. , Sp. Pl. 404 (1753) .

Like 90 but usually smaller in all its parts and with underground, shortly creeping stolons arising from the bulbils; basal leaves usually 10-15 mm wide, 3- to 5-lobed; lobes of cauline leaves ovate-lanceolate, obtuse; petals 3-5 mm; ovary immersed for of its height. 2« = 52. Arctic and subarctic Europe, southwards to S. Norway and C. Scotland. Br Fa Fe Is N o Rs (N) Sb Su. S. hyperborea R.Br. in Parry, Jour. Voy. N. W.Pass. (Suppl. App.) 274 (1824), recorded from Svalbard (also from Greenland and arctic America), has usually been included under 91, but possibly deserves specific status. It differs in the reddish colour of the whole plant (including petals), the smaller petals and the absence of stolons. It has 2« = 26.